Several studies show that music possesses properties that affect the growth rate of plants in different ways. These properties may be the wavelength of the music‚ its frequency or even its tempo. According to a study conducted by Margaret E. Collins and John E. K. Foreman‚ entitled The Effect of Sound on the growth rate of plants (2001)‚ plants growth is directly affected by sounds of varying frequencies. They observed that when plants are exposed to pure tones‚ it affects the growth of the plant
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heavy metals lead and cadmium (0.05 mM and 0.3 mM) on growth and antioxidant enzymes of seedlings of 2 mung bean genotypes (NM 19-19 and Azri mung-2006). Results revealed that germination percentage and seedling length decreased when compared with the control for both genotypes. However‚ seedling length and germination percentage was better in NM 19-19 as compared to Azri mung-2006. Elevated levels of protein were observed under metal stress in both genotypes. Heavy metals induced oxidative stress
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Olorunmaiye‚ P. M. COURSE CONTENT: Weed definition‚ classification‚ and economic importance.Weed biology: reproduction‚ mechanism of weed seed dissemination‚ prolificity‚ survivability‚ persistence and colonisation. Seed viability‚ dormancy. Germination‚ adaptability to environment growth and feeding habits. Parasitic weeds. Weed management: prevention‚ eradication and control. Methods of weed control: cultural‚ chemical‚ biological and integrated. Herbicides: classification‚ formulation‚ methods
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Introduction: The world’s total forest area is just over 4 billion hectares‚ which corresponds to an average of 0.6 ha per capita (Figure 1). The five most forest-rich countries (the Russian Federation‚ Brazil‚ Canada‚ the United States of America and China) account for more than half of the total forest area. Deforestation – mainly the conversion of tropical forest to agricultural land – shows signs of decreasing in several countries. Around 13 million hectares of forest were converted to
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systems. It is distributed in the Indo-Malesian region extending from India to Papua New Guinea (Ismail‚ Jusoh & Sahri‚ 1995). In general‚ Neolamarckia cadamba can be classified to four major characteristics: flowering and fruiting‚ seed germination
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effect on radish seed germination rates? 2. Does exposure to such radiation have a measurable effect on radish seedling growth? 3. If you can demonstrate any effect‚ is it dependent on the level of radiation exposure? 4. Do individuals in the population exhibit variations in their tolerance to radiation exposure? First Hypothesis: Ho: Seed germination has nothing to do with gamma radiation (50‚ 150‚ and 500) HA: Gamma radiation will have an effect on seed germination Second Hypothesis:
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Botany online 1996-2004. No further update‚ only historical document of botanical science! Gibberellins In 1926 studied the Japanese E. KUROSAWA a rice disease that is known as the ‘foolish seedling’-disease in Japan. The plants grow extremely fast‚ look spindly and pale and break off easily. KUROSAWA detected that the reason for this abnormal growth is a substance that is secreted by a parasitic fungi (Fusarium moniliforme = Gibberella fujikuroi). It was termed gibberellin. During the thirties
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highly concentrated form that that is potent and highly effective. What it does: - induces the closure in stomata to prevent transpiration and water loss - prevents fruit ripening - promotes seed dormancy by stopping cell growth and seed germination -stops synthesis of Kinetin nucleotide -Kinetin: cytokinin that promotes cell division -down regulate enzymes needed for photo synthesis -dials down growth to levels just needed for survival to prevent water loss Where
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1. The radish plant growth within the tap water petri dish grew so well it started to lift the lid off the dish. The results from the Acid Rain (50% vinegar solution) did not allow any radish seeds to germinate. There were never signs of seed germination while observing the seeds over a three week period. In the petri dish labeled Acid Rain‚ 0 out of 10 seeds sprouted into plant growth as seen in Figure 5.2. The results from the effects of acid rain are compared on Figures 5.1 and 5.2.
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The Effect of Salinity on Seed Germination 1) Abstract: Poor seeding growth can be the result of soil salinity. A study was done to examine the influence of NaCl salinity treatment on the germination and seeding grow of vigna radiata using different NaCl concentration 0 (control) ‚ 0.25 ‚ 0.5 ‚ 1.0 ‚ 1.75 . A graph was used to analyze the data obtained from the study. Important differences among the treatment were indicated as a result of this study. The germination percentage of vigna radiata
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